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Biomolecules and the Chemistry of Life

Biomolecules and the Chemistry of Life


1. Electrons and neutrons are→repulsed by each other because electrons are negative and neutrons are positive.
2. Atoms that vary in the number of neutrons they contain are called→isotopes.
3. Polarity is the result of→the unequal sharing of electrons between covalently bonded atoms.
4. When a water strider stands on the surface of a pond without sinking, he is taking advantage of→the fact that ice floats.
5. Water can act as a buffer because→water is neutral.
6. Organic molecules→include all molecules that have some carbon.
7. Carbohydrates are useful for all the following purposes EXCEPT→catalyzing reactions.
8. Phospholipids are made of→two fatty acids and a phosphate group bound to a glycerol backbone.
9. Which of the following are proteins?→ATP synthase – an enzyme that produces ATP.
10. Which of the following traits is NOT shared by DNA and RNA?→They both have the nucleotides adenine, cytosine, and guanine.
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